@DCPoke Aside from some stadium parking lot nazis, Wyoming fans should experiences no issues with early tailgating and most Huskies' fans. Some UConn fans may even enjoy the Cowboy Joe Club's Rocky Mountain oystahs.
Instead of Rentschler Field parking lots, you might consider the
Pratt & Whitney Aircraft Club lot cross Silver Lane (main road) from the stadium. Enter directly from Silver Lane, not the Clement Road entry/exit.
The Aircraft Club lot is on the North side of Silver Lane just west of the north entrance to the Rent. Last time there I found it pricier than expected but worth it.
Just to orient you a bit, there is a large Cabela's nearby before you go into the parking lot. Not sure if that would impress a westerner, but I always love going in there. Check your nav for particulars.
You might note that the stadium sits on the end of an airfield with a 10,000+ foot runway. It is no longer used, but not many decades ago they used to have company air shows there over two days. Every aircraft known to man or beast powered by Pratt & Whitney jet engines would come in and fly in the air show. F-15', F-16's, F-14's, F-111's, C-130's, C-17's, B-747 (with a light fuel load) and many others. Lotta history in that place.